MAX4567 Maxim, MAX4567 Datasheet - Page 12

• Manufacturer Part Number: MAX4567
• Description: The MAX4565/MAX4566/MAX4567 are low-voltage T-switches designed for switching RF and video signals from DC to 350MHz in 50Ω and 75Ω systems
• Manufacturer: Maxim

Figure 3. Switching Time
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
With its excellent off isolation, the MAX4565 is ideal for
use in high-frequency video multiplexers. Figure 2
shows such an application for switching any one of four
video inputs to a single output. The same circuit may
be used as a demultiplexer by simply reversing the sig-
nal direction.
______________________________________________Test Circuits/Timing Diagrams
12
______________________________________________________________________________________
REPEAT TEST FOR EACH SWITCH.
V
IN_
50
IN_
GND_
10nF
MAX4565
MAX4566
MAX4567
10nF
+5V
V+
NO_OR NC_
-5V
V-
COM_
Multiplexer
3V
R
L
V
= 300
OUT
Stray capacitance of traces and the output capacitance
of switches placed in parallel reduces bandwidth, so the
outputs of no more than four individual switches should
be placed in parallel to maintain a high bandwidth. If
more than four mux channels are needed, the 4-channel
circuit should be duplicated and cascaded.
ALL GND_ PINS ARE CONNECTED TO GROUND PLANE (OV).
V- IS CONNECTED TO GND (OV) FOR SINGLE-SUPPLY OPERATION.
V
V
IN_
OUT
V+
0V
0V
t
OFF
50%
90%
50%
90%
t
ON